F Richter - 2008-03-08

I patched bugle for two things:
1. "frame traces": only create a trace for a single frame when a hotkey is pressed. For applications with a lot of GL commands this is much more manageable then a complete trace.
2. GREMEDY_string_marker support: this is useful if the application to debug emits these string markers. Personally I use them to identify which function caused a GL command. Much more convenient then having to figure that out from the call patterns ;)

Patch against 20080123 is here: